Playtex Products Inc. chief executive Michael Gallagher said the company’s effort to find a merger partner remained ongoing, although it didn’t expect to announce a deal for several more months.“It was my expectation that the complete process would take six or nine months,” Mr. Gallagher told analysts and investors on a conference call to discuss the company’s fourth quarter earnings. “I believe we are right on track.”The maker of tampons, Mr. Bubble bat...